EP1023710A4 - DETECTING THE LOWERING CURRENT TO DETERMINE THE CIRCUIT BREAKER STATE OF A POWER SYSTEM - Google Patents
DETECTING THE LOWERING CURRENT TO DETERMINE THE CIRCUIT BREAKER STATE OF A POWER SYSTEMInfo
- Publication number
- EP1023710A4 EP1023710A4 EP98953415A EP98953415A EP1023710A4 EP 1023710 A4 EP1023710 A4 EP 1023710A4 EP 98953415 A EP98953415 A EP 98953415A EP 98953415 A EP98953415 A EP 98953415A EP 1023710 A4 EP1023710 A4 EP 1023710A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- subsidence
- determination
- detection
- current
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/167—Circuits for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/951,378 US5914663A (en) | 1997-10-16 | 1997-10-16 | Detection of subsidence current in the determination of circuit breaker status in a power system |
PCT/US1998/021516 WO1999021146A1 (en) | 1997-10-16 | 1998-10-13 | Detection of subsidence current in the determination of circuit breaker status in a power system |
US951378 | 2001-09-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1023710A1 EP1023710A1 (en) | 2000-08-02 |
EP1023710A4 true EP1023710A4 (en) | 2003-05-02 |
Family
ID=25491623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98953415A Withdrawn EP1023710A4 (en) | 1997-10-16 | 1998-10-13 | DETECTING THE LOWERING CURRENT TO DETERMINE THE CIRCUIT BREAKER STATE OF A POWER SYSTEM |
Country Status (5)
Country | Link |
---|---|
US (1) | US5914663A (zh) |
EP (1) | EP1023710A4 (zh) |
CN (1) | CN1132130C (zh) |
BR (1) | BR9813062A (zh) |
WO (1) | WO1999021146A1 (zh) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6917252B1 (en) | 2003-04-28 | 2005-07-12 | Adam S. Wyszynski | Fully integrated automatically-tuned RF and IF active bandpass filters |
US7486338B1 (en) | 2003-04-28 | 2009-02-03 | Wyszynski Adam S | Fully integrated terrestrial TV tuner architecture |
US7345863B2 (en) * | 2005-07-14 | 2008-03-18 | Schweitzer Engineering Laboratories, Inc. | Apparatus and method for identifying a loss of a current transformer signal in a power system |
DE102006026630A1 (de) * | 2006-06-08 | 2007-12-13 | Zf Friedrichshafen Ag | Verfahren zur Ansteuerung eines Proportionalmagneten eines Elektromagnetventils |
US7869169B2 (en) * | 2006-07-14 | 2011-01-11 | William Davison | Method and system of current transformer output magnitude compensation in a circuit breaker system |
US7705601B2 (en) * | 2006-09-21 | 2010-04-27 | Eaton Corporation | Method and apparatus for monitoring wellness of contactors and starters |
US7514932B2 (en) * | 2007-01-04 | 2009-04-07 | Trane International Inc. | Method of recognizing signal mis-wiring of a three-phase circuit |
TWI397246B (zh) * | 2009-11-06 | 2013-05-21 | Analog Vision Technology Inc | 具有拴鎖控制功能的保護電路 |
EP2580829B1 (en) * | 2010-06-14 | 2015-11-11 | ABB Research Ltd. | Breaker failure protection of hvdc circuit breakers |
KR101118375B1 (ko) * | 2010-09-07 | 2012-03-09 | 엘에스산전 주식회사 | 전력계통에서의 고속 사고판단 장치 |
CN102156243B (zh) * | 2011-03-16 | 2016-08-10 | 艾默生网络能源有限公司 | 一种功率单元熔断器状态的检测方法和装置 |
CN104267344B (zh) * | 2014-10-27 | 2017-01-18 | 国家电网公司 | 基于预测突变信息的断路器偷跳检测方法 |
DE102014224173B4 (de) * | 2014-11-26 | 2023-08-10 | Siemens Aktiengesellschaft | Leistungsschalter |
CN105259495B (zh) * | 2015-07-03 | 2017-11-03 | 四川大学 | 一种基于分合闸线圈电流特征量优化的高压断路器操作机构状态评估方法 |
CN106569163A (zh) * | 2015-10-08 | 2017-04-19 | 南京南瑞继保电气有限公司 | 一种检测互感器拖尾量的方法 |
EP3171473B1 (de) * | 2015-11-17 | 2021-04-21 | Siemens Aktiengesellschaft | Verfahren und schutzeinrichtung zum überwachen eines leistungsschalters in einem elektrischen energieversorgungsnetz |
CN105891708B (zh) * | 2016-05-11 | 2018-07-10 | 四川大学 | 基于anfis的高压断路器操作机构状态评估 |
CN105929217B (zh) * | 2016-05-12 | 2019-01-08 | 国电南瑞科技股份有限公司 | 一种基于直流分量闭锁的失灵保护电流拖尾判别方法 |
CN106019131B (zh) * | 2016-05-18 | 2017-10-31 | 四川大学 | 一种基于分合闸线圈电流的高压断路器操作机构状态综合评估方法 |
CN113499538A (zh) * | 2016-08-01 | 2021-10-15 | 心脏器械股份有限公司 | 基于vad电流波形的心率确定 |
CN107976625B (zh) * | 2017-10-31 | 2020-02-07 | 国网河南省电力公司检修公司 | 一种高压直流控制保护系统开关位置判断方法 |
CN107957548A (zh) * | 2017-12-12 | 2018-04-24 | 国网浙江建德市供电有限公司 | 一种用于三相断路器的分合闸同期检测装置 |
JP7378273B2 (ja) | 2019-11-06 | 2023-11-13 | 三菱電機株式会社 | 保護リレー装置 |
GB2595855A (en) * | 2020-06-08 | 2021-12-15 | Eaton Intelligent Power Ltd | DC-overcurrent detector |
CN116449193B (zh) * | 2023-06-13 | 2023-09-26 | 上海红檀智能科技有限公司 | 物联网智能断路器电压陷波快速检测与预警方法及装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4330816A (en) * | 1980-01-02 | 1982-05-18 | Fujitsu Fanuc Limited | Overcurrent protection apparatus |
DE3531001A1 (de) * | 1985-08-30 | 1987-03-12 | Swv Signaltechnik Gmbh | Ueberwachungseinrichtung fuer niederspannungssignallampen |
US4672166A (en) * | 1985-02-07 | 1987-06-09 | Accumulatorenfabrik Sonnenschein Gmbh | Control circuit for the current of a welding transformer |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4685024A (en) * | 1985-11-19 | 1987-08-04 | General Electric Company | Overcurrent circuit interrupter using RMS sampling |
US4788619A (en) * | 1987-04-24 | 1988-11-29 | Basler Electric Company | Protective relays and methods |
CA2030060C (en) * | 1990-11-15 | 1995-11-21 | Alfred M. Hase | Circuit breaker or fuse failure alarm circuits for dc telecom and ac distribution circuits |
US5510773A (en) * | 1994-10-14 | 1996-04-23 | Square D Company | Low burden visual power-on indicator for a self-powered circuit protection device |
-
1997
- 1997-10-16 US US08/951,378 patent/US5914663A/en not_active Expired - Fee Related
-
1998
- 1998-10-13 WO PCT/US1998/021516 patent/WO1999021146A1/en not_active Application Discontinuation
- 1998-10-13 EP EP98953415A patent/EP1023710A4/en not_active Withdrawn
- 1998-10-13 CN CN98810999.9A patent/CN1132130C/zh not_active Expired - Fee Related
- 1998-10-13 BR BR9813062-5A patent/BR9813062A/pt not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4330816A (en) * | 1980-01-02 | 1982-05-18 | Fujitsu Fanuc Limited | Overcurrent protection apparatus |
US4672166A (en) * | 1985-02-07 | 1987-06-09 | Accumulatorenfabrik Sonnenschein Gmbh | Control circuit for the current of a welding transformer |
DE3531001A1 (de) * | 1985-08-30 | 1987-03-12 | Swv Signaltechnik Gmbh | Ueberwachungseinrichtung fuer niederspannungssignallampen |
Non-Patent Citations (1)
Title |
---|
See also references of WO9921146A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1132130C (zh) | 2003-12-24 |
WO1999021146A1 (en) | 1999-04-29 |
EP1023710A1 (en) | 2000-08-02 |
US5914663A (en) | 1999-06-22 |
BR9813062A (pt) | 2000-08-22 |
CN1278940A (zh) | 2001-01-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20000511 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20030318 |
|
17Q | First examination report despatched |
Effective date: 20030512 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20040624 |